The molar absorptivity of ethylene in hexane is 15,000 L mol⁻¹ cm⁻¹. What is the maximum absorbance observed at a concentration of 1.5 x 10⁻⁴ mol L⁻¹? (Path length = 1 cm)

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Quizplus · Accepted Answer

The maximum absorbance can be calculated using Beer-Lambert Law: A = εlc, where A is absorbance, ε is molar absorptivity (15,000 L mol^-1 cm^-1), l is path length (1 cm), and c is concentration (1.5 x 10^-4 mol L^-1). Thus, A = 15,000 x 1 x 1.5 x 10^-4 = 2.25.

The Molar Absorptivity of Ethylene in Hexane Is 15,000 L